Definition of nannofossil in English:

nannofossil

Syllabification: nan·no·fos·sil
Pronunciation: /ˌnanəˈfäsəl
 
/
(also nanofossil)

noun

  • The fossil of a minute planktonic organism, especially a calcareous unicellular alga.
    More example sentences
    • This paper presents high-resolution data from calcareous nannofossils, planktic Foraminifera, palynomorphs and stable isotopes for the Late Albian OAE Id.
    • In the seas, the calcareous nannofossils were still in evidence but in shallow waters the benthonic nummulite and other larger foraminifera became very abundant.
    • The same samples as used for geochemistry were investigated for their content of calcareous nannofossils.

Origin

1960s: nanno- from nannoplankton (variant of nanoplankton) + fossil.

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